Thought allied fearlessly to purpose becomes creative force: he who knows this is ready to become something higher and stronger than a mere bundle of wavering thoughts and fluctuating sensations; he who does this has become the conscious and intelligent wielder of his mental powers.
Doubt and fear are the great enemies of knowledge, and he who encourages them, who does not slay them, thwarts himself at every step.
The will to do springs from the knowledge that we can do.
A man is literally what he thinks, his character being the complete sum of all his thoughts.
Thoughts of doubt and fear never accomplished anything, and never can. They always lead to failure.
Doubts and fears should be rigorously excluded; they are disintegrating elements, which break up the straight line of effort.