Words are one thing - deeds something entirely different. Fine words are a mask to cover shady deeds.

If you don't encounter setbacks in your career, if you don't have doubts and disappointments, let me tell you, you're not dreaming big enough.

Error is the force that welds men together; truth is communicated to men only by deeds of truth.

I have no patience for anybody who doubts me, none at all.

As a calf follows its mother among a thousand cows, so the (good or bad) deeds of a man follow him.

The barrier to success is not something which exists in the real world; it is composed purely and simply of doubts about ability.