The greatest obstacle to discovery is not ignorance -- it is the illusion of knowledge.

The greatest obstacle to discovery is not ignorance -- it is the illusion of knowledge.

Those who commence deliberately. They plod on. They stick to it. They persevere and finally reap their rewards.

Those who commence deliberately. They plod on. They stick to it. They persevere and finally reap their rewards.

Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change read more

Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind.

Stand up to your obstacles and do something about them. You will find that they haven't half the strength you read more

Stand up to your obstacles and do something about them. You will find that they haven't half the strength you think they have.

Whether you think you can or think you can't - you are right

Whether you think you can or think you can't - you are right

The dogmas of the quiet past are inadequate to the stormy present. The occasion is piled high with difficulty, and read more

The dogmas of the quiet past are inadequate to the stormy present. The occasion is piled high with difficulty, and we must rise with the occasion. As our case is new, so we must think anew and act anew.

The greatest obstacle to progress is prejudice.

The greatest obstacle to progress is prejudice.

Obstacles are those frightful things you see when you take your eyes off your goal.

Obstacles are those frightful things you see when you take your eyes off your goal.

Obstacles are things a person sees when he takes his eyes off his goal.

Obstacles are things a person sees when he takes his eyes off his goal.