The goal of mankind is knowledge. . . . Now this knowledge is inherent in man. No knowledge comes from outside: it is all inside. What we say a man "… - Swami Vivekananda

"No knowledge comes from outside; it is all inside. What we say a man "knows", should, in strict psychological language, be what he "discovers" or "unveils"; what a man "learns" is really what he "discovers", by taking the cover off his own soul, which is a mine of infinite knowledge."

Soft-brained people, weak-minded, chicken-hearted, cannot find the truth. One has to be free, and as broad as the sky.

A rich man had a garden and two gardeners. One of these gardeners was very lazy and did not work; but when the owner came to the garden, the lazy man would get up and fold his arms and say, "How beautiful is the face of my master", and dance before him. The other gardener would not talk much, but would work hard, and produce all sorts of fruits and vegetables which he would carry on his head to his master who lived a long way off. Of these two gardeners, which would be the more beloved of his master? Shiva is that master, and this world is His garden, and there are two sorts of gardeners here; the one who is lazy, hypocritical, and does nothing, only talking about Shiva's beautiful eyes and nose and other features; and the other, who is taking care of Shiva's children, all those that are poor and weak, all animals, and all His creation. Which of these would be the more beloved of Shiva? Certainly he that serves His children. He who wants to serve the father must serve the children first. He who wants to serve Shiva must serve His children — must serve all creatures in this world first. It is said in the Shâstra that those who serve the servants of God are His greatest servants. So you will bear this in mind.

All this bringing of the mind into a higher state of vibration is included in one word in Yoga — Samadhi.