He who knows himself knows others.

Ignorance lies at the bottom of all human knowledge, and the deeper we penetrate the nearer we arrive unto it. For what do we truly know, or what can we clearly affirm, of any one of those important things upon which all our reasonings must of necessity be built--time and space, life and death, matter and mind?

He who knows himself knows others.

Honesty is not only the deepest policy, but the highest wisdom; since, however difficult it may be for integrity to get on, it is a thousand times more difficult for knavery to get off; and no error is more fatal than that of those who think that Virtue has no other reward because they have heard that she is her own.

Time is the most subtle yet the most insatiable of depredators, and by appearing to take nothing is permitted to take all; nor can it be satisfied until it has stolen the world from us, and us from the world. It constantly flies, yet overcomes all things by flight; and although it is the present ally, it will be the future conqueror of death.

Happiness ... leads none of us by the same route.

We ought not to be over-anxious to encourage innovation in cases of doubtful improvement, for an old system must ever have two advantages over a new one; it is established, and it is understood.