Adi Shankara on Monism

“Like bubbles in the water, the worlds rise, exist and dissolve in the Supreme Self, which is the material cause and the prop of everything.”

“The Soul appears to be finite because of ignorance. When ignorance is destroyed the Self which does not admit of any multiplicity truly reveals itself by itself: like the Sun when the clouds pass away.”

“He who renouncing all activities, who is free of all the limitations of time, space and direction, worships his own Atman which is present everywhere, which is the destroyer of heat and cold, which is Bliss-Eternal and stainless, becomes All-knowing and All-pervading and attains thereafter Immortality.”