Don't waste time learning the "tricks of the trade. Instead, learn the trade.

To know how to live is my trade and my art.

My trade and art is to live.

Satiety comes of too frequent repetition; and he who will not give himself leisure to be thirsty can never find the true pleasure of drinking

Nothing is so firmly believed as that which is least known

The value of life lies not in the length of days, but in the use we make of them... Whether you find satisfaction in life depends not on your tale of years, but on your will.