Records can be destroyed if they do not suit the prejudices of ruling cliques, lost if they become incomprehensible, distorted if a copyist wishes to impose a new meaning upon them, misunderstood if we lack the information to interpret them. The past is like a huge library, mostly fiction.

When everything seems to be going against you, remember that the airplane takes off against the wind, not with it.

Paying good wages is not charity at all-it is the best kind of business.

When the leaves of the strongest tree fall, spring is here.

Speculation is only a word covering the making of money out of the manipulation of prices, instead of supplying goods and services.

I invented nothing new, I simply assembled the discoveries of other men behind whom there was centuries of work.

The man who is too set to change is dead already. The funeral is a mere detail.