B.r. Ambedkar said this quote

Why does a human body become deceased?The reason is that as long as the human body is not free from suffering, mind cannot be happy. If a man lacks enthusiasm, either his body or mind is in a deceased condition.... Now what saps the enthusiasm in man? If there is no enthusiasm, life becomes drudgery - a mere burden to be dragged. Nothing can be achieved if there is no enthusiasm. The main reason for this lack of enthusiasm on the part of a man is that an individual looses the hope of getting an opportunity to elevate himself. Hopelessness leads to lack of enthusiasm. The mind in such cases becomes deceased.... When is enthusiasm created? When one breaths an atmosphere where one is sure of getting the legitimate reward for one's labor, only then one feels enriched by enthusiasm and inspiration.

~ B.r. Ambedkar

In the Hindu religion, one can[not] have freedom of speech. A Hindu must surrender his freedom of speech. He must act according to the Vedas. If the Vedas do not support the actions, instructions must be sought from the Smritis, and if the Smritis fail to provide any such instructions, he must follow in the footsteps of the great men. He is not supposed to reason. Hence, so long as you are in the Hindu religion, you cannot expect to have freedom of thought

~ B.r. Ambedkar

religion is for man and not man for religion

~ B.r. Ambedkar

The basic idea underlying religion is to create an atmosphere for the spiritual development of the individual.

~ B.r. Ambedkar