Quisquis sua facta scire et præsumitur et debet.
Every one is both presumed, and ought to know his own actions.
Quo ligatur, eo dissolvitur.
A thing is dissolved in the same way, in which it is bound.
Quo tutela redit, eo hæreditas pervenit, nisi cum fœminæ hæredes intercedunt.
An inheritance comes in the way, in which guardianship goes, unless when female heirs intervene.
Quod ab initio non valet, in tractu temporis non convalescet.
What at the beginning is not valid, will not become valid in the process of time.
Quod ab initio non valet, tractu temporis non potest convalescere.
What at the beginning is not valid, cannot become valid in process of time.