Inductive reason, which alone ...

Inductive reason, which alone makes man master of his environment, is an achievement and when once born it must be reinforced by inhibiting the growth of other modes of knowledge.
Inductive reason, which alone makes man master of his environment, is an achievement and when once born it must be reinforced by inhibiting the growth of other modes of knowledge.
 Muhammad Iqbal

More phrases

Effort only fully releases its reward after a person refuses to quit.
Never complain and never explain.
A good plan violently executed now is better than a perfect plan executed next week.
 George S. Patton
Problems are not stop signs, they are guidelines.
 Robert Schuller
Never give up, for that is just the place and time that the tide will turn.
 Harriet Beecher Stowe

Quotes from the same author

The revealed and mystic literature of mankind bears ample testimony to the fact that religious experience has been too enduring and dominant in the history of mankind to be rejected as mere illusion. There seems to be no reason, then, to accept the normal level of human experience as fact and reject its other levels as mystical and emotional.
 Muhammad Iqbal
In the first period religious life appears as a form of discipline which the individual or a whole people must accept as an unconditional command without any rational understanding of the ultimate meaning and purpose of that command.
 Muhammad Iqbal
I have seen the movement of the sinews of the sky, And the blood coursing in the veins of the moon.
 Muhammad Iqbal
Be aware of your own worth, use all of your power to achieve it. Create an ocean from a dewdrop. Do not beg for light from the moon, obtain it from the spark within you.
 Muhammad Iqbal
But the perception of life as an organic unity is a slow achievement, and depends for its growth on a people's entry into the main current of world-events.
 Muhammad Iqbal