Manu Smriti says: One-fourth of one's knowledge comes from the Teacher, one-fourth from study, one-fourth from co-students and one-fourth by experience in the passage of time.
What man needs is not philosophy or religion in the academic or formalistic sense of the term, but ability to think rightly. The malady of the age is not absence of philosophy or even irreligion but wrong thinking and a vanity which passes for knowledge. Though it is difficult to define right thinking, it cannot be denied that it is the goal of the aspirations of everyone.
Dirt is matter out of place. Weed is a plant out of place. Nuisance is action out of place. Even those things, acts or words which are normally good and useful become bad, useless and even harmful when they are out of place, time and circumstance. Knowledge of this fact is an essential part of wisdom.