It is by his personal conduct that any man of 45 ordinary power will do the greatest amount of good that is in him to do. Ruskin.
It is by imitation, more than by precept, that we learn anything. Burke.
It is by presence of mind in untried circumstances that the native metal of a man is tested. Lowell.
It is by study that we become contemporaries of every age and citizens of the world. (?)
It is certain my belief gains quite infinitely the moment I can convince another mind thereof. Novalis.
It is certain that either wise bearing or 50 ignorant carriage is caught as men take diseases, one of another. 2 Hen. IV., v. 1.
It is character which builds an existence out of circumstance. Our strength is measured by our plastic power. Carlyle.
It is cheap enough to say, "God help you." Pr.
It is common to esteem most what is unknown. Tac.
It is commonly the imagination which is wounded first, rather than the heart; it is so much more sensitive. Thoreau.