He writes these facts to his mother, and adds, "This is merely for your eye: it may please you to know that your son is not unpopular or useless. Every person here, from the highest to the lowest, shows me every attention and kindness.
"I shall come to see you as soon as I can. I hear with infinite delight of your health, and I hope Heaven will continue to preserve and bless a mother who deserves so well of her children."
Trinity College, Dublin, conferred upon him the degree of Doctor of Civil Law. Cuvier said of him: "Davy, not yet thirty-two, in the opinion of all who could judge of such labors, held the first rank among the chemists of this or of any other age." The National Institute of France had awarded him the prize given by Napoleon to the greatest discovery by the means of galvanism.
And yet all this fame and honor had been won by incessant labor. He writes to his mother: "At present, except when I resolve to be idle for health's sake, I devote every moment to labors which I hope will not be wholly ineffectual in benefiting society, and which will not be wholly inglorious for my country hereafter; and the feeling of this is the reward which will continue to keep me employed."
His brother John, who had been for three years at the Royal Institution, now went to Edinburgh to study medicine. Davy writes him: "Let no difficulties alarm you, you may be what you please. Trust me, I know what your powers are. Preserve the dignity of your mind, and the purity of your moral conduct. You set sail with a fair wind on the ocean of life. You have great talents, good feelings, and an unbroken and an uncorrupted spirit. Move straight forward on to moral and intellectual excellence. Let no example induce you to violate decorum,—no ridicule prevent you from guarding against sensuality or vice. Live in such a way that you can always say, the whole world may know what I am doing."
In 1812 Davy was knighted by the Prince Regent. Only thirty-three, and he had come to great renown!
And now an important change was to come into his life. During the preceding year he had become acquainted with Mrs. Appreece, towards whom esteem gradually ripened into affection. When their marriage had been decided upon, he wrote his mother: "I am the happiest of men, in the hope of a union with a woman equally distinguished for virtues, talents, and accomplishments.... You, I am sure, will sympathize in my happiness. I believe I should never have married but for this charming woman, whose views and whose tastes coincide with my own, and who is eminently qualified to promote my best efforts and objects in life."
To his brother he writes: "I have been very miserable. The lady whom I love best of any human beings has been very ill. She is now well, and I am happy. Mrs. Appreece has consented to marry me: and when the event takes place I shall not envy kings, princes, or potentates.... I am going to be married to-morrow; and I have a fair prospect of happiness, with the most amiable and intellectual woman I have ever known." How love idealizes all things, makes a new heaven and a new earth for us! He found in her the two needed qualities for happiness; amiability, without which the life of a man is usually made wretched, and intellectuality, without which a cultivated man can have little companionship in a wife.
The marriage seems to have been a happy one, for he writes to John later: "Lady D. is a noble creature, and every day adds to my contentment by the powers of her understanding, and her amiable and delightful tones of feeling."
Like the wife of Herschel, she was a wealthy widow, so that after his marriage Davy was enabled to travel, and devote himself wholly to original investigation. He resigned his professorship at the Royal Institution after twelve most useful years.