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.

All the adversity I've had in my life, all my troubles and obstacles, have strengthened me... You may not realize read more

All the adversity I've had in my life, all my troubles and obstacles, have strengthened me... You may not realize it when it happens, but a kick in the teeth may be the best thing in the world for you.

Only the curious will learn and only the resolute overcome the obstacles to learning. The quest quotient has always excited read more

Only the curious will learn and only the resolute overcome the obstacles to learning. The quest quotient has always excited me more than the intelligence quotient.

Formulate and stamp indelibly on your mind a mental picture of yourself as succeeding. Hold this picture tenaciously. Never permit read more

Formulate and stamp indelibly on your mind a mental picture of yourself as succeeding. Hold this picture tenaciously. Never permit it to fade. Your mind will seek to develop the picture... Do not build up obstacles in your imagination.

If you can find a path with no obstacles, it probably doesn't lead anywhere.

If you can find a path with no obstacles, it probably doesn't lead anywhere.

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.

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

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

The authority of those who teach is often an obstacle to those who want to learn.

The authority of those who teach is often an obstacle to those who want to learn.

An obstacle is often an unrecognized opportunity

An obstacle is often an unrecognized opportunity