Only the heart without a stain knows ease.

On the pinnacle of success man does not stand firm long.

A man would create another man if one did not already exist, but a woman might live an eternity without even thinking of reproducing her own sex.

I will say with Lorenzo de Medici that those who do not hope for another life are always dead to this one.

The man with insight enough to admit his limitations comes nearest to perfection.

A man is not little when he finds it difficult to cope with circumstances, but when circumstances overmaster him.

Every great idea exerts, on first appearing, a tyrannical influence: Hence, the advantages it brings are turned all too soon into disadvantages.