He who is silent is forgotten; he who abstains is taken at his word; he who does not advance falls back; he who stops is overwhelmed, distanced, crushed; he who ceases to grow greater becomes smaller; he who leaves off, gives up; the stationary condition is the beginning of the end.

He who is too much afraid of being duped has lost the power of being magnanimous.

It is dangerous to abandon one's self to the luxury of grief; it deprives one of courage, and even the wish for recovery.

Knowledge, love, power - there is the complete life.

To learn new habits is everything, for it is to reach the substance of life. Life is but a tissue of habits.

Fasting is only saving bread, but if you have conquered the heart you have conquered everything.

The world is not a place for enjoyment, but a place where humanity is on trial.

I pray every single second of my life; not on my knees, but with my work.

The most costly outlay is the outlay of time.

Never esteem anything as of advantage to thee that shall make thee break thy word or lose thy self-respect.

The one thing worth living for is to keep one's soul pure.

Theory without experience is sterile, practice without theory is blind.

[Wisdom] teacheth temperance and prudence, justice and fortitude.

Beware of the man of one book.

Moral virtue can be without some of the intellectual virtues, namely, wisdom, science and art, but not without understanding and prudence. Moral virtue cannot be without prudence, because moral virtue is habit of choosing, that is, making us choose well.

Prudence considers the means of acquiring happiness, but wisdom considers the very object of happiness.

A faithless heart betrays the head unsound.

Virtue and sense are one; and, trust me, still a faithless heart betrays the head unsound.