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.

A good intention but fixed and resolute - bent on high and holy ends, we shall find means to them read more

A good intention but fixed and resolute - bent on high and holy ends, we shall find means to them on every side and at every moment; and even obstacles and opposition will but make us "like the fabled specter-ships," which sail the fastest in the very teeth of the wind.

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.

The harder the conflict, the more glorious the triumph. What we obtain too cheaply, we esteem too lightly; 'Tis dearness read more

The harder the conflict, the more glorious the triumph. What we obtain too cheaply, we esteem too lightly; 'Tis dearness only that gives everything its value.

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.

Defeat may test you; it need not stop you. If at first you don't succeed, try another way. For every read more

Defeat may test you; it need not stop you. If at first you don't succeed, try another way. For every obstacle there is a solution. Nothing in the world can take the place of persistence. The greatest mistake is giving up.

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.

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.