The finer is always the cause, the grosser the effect. So the external world is the effect, the internal the cause.
Swami VivekanandaMeditation is a sort of prayer and prayer is meditation. The highest meditation is to think of nothing. If you can remain one moment without thought, great power will come.
Swami VivekanandaThe power of meditation gets us everything. If you want to get power over nature, [you can have it through meditation]. It is through the power of meditation all scientific facts are discovered today. They study the subject and forget everything, their own identity and everything, and then the great fact comes like a flash.
Swami Vivekananda