As for courage and will - we cannot measure how much of each lies within us we can only trust there will be sufficient to carry through trials which may lie ahead.

A change in the weather is sufficient to recreate the world and ourselves.

Is it sufficient that you have learned to drive the car or shall we look and see what is under the hood? Most people go through life without ever knowing.

It is not sufficient to see and to know the beauty of a work. We must feel and be affected by it.

Because most people are not sufficiently employed in themselves they run about loose hungering for employment and satisfy themselves in various supererogatory occupations. The easiest of these occupations which have all to do with making things already made is the making of people: it is called the art of friendship.

Life is the art of drawing sufficient conclusions from insufficient premises.

The private interest of the individual would not be sufficiently provided for by reasonable and cool self-love alone therefore the appetites and passions are placed within as a guard and further security without which it would not be taken due care of.

God created man and finding him not sufficiently alone gave him a companion to make him feel his solitude more keenly.