Action is the real measure of intelligence.

The necessity for struggle is one of the clever devices through which nature forces individuals to expand, develop, progress, and become strong through resistance. . .We are forced to recognize that this great universal necessity for struggle must have a definite and useful purpose. That purpose is to force the individual to sharpen his wits, arouse his enthusiasm, build up his spirit of faith, gain definiteness of purpose, develop his power of will, and inspire his faculty of imagination to give him new uses for old ideas and concepts. . .

There would be no advantage to be gained by sowing a field of wheat if the harvest did not return more than was sown.

Failure cannot cope with persistence.

The successful leader must plan his work and work his plan.

The greatest failure in life is to stop trying.

To win the big stakes in this changed world, you must catch the spirit of the great pioneers of the past, whose dreams have given to civilization all that it has of value, the spirit that serves as the life-blood of our own country – your opportunity and mine, to develop and market our talents.