Who we are

If you throw a stone in the lake, it raises a vibration and [that stirs] the water into vibration. 

I throw my mind into the state of bliss and the tendency is to raise the same bliss in your mind. 

How often in your mind or heart [you have thought something] and without [verbal] communication, [others have got your thought]? Everywhere we are one. ... That is what we never understand. 

The whole [universe] is composed of time, space, and causation. And God [appears as this universe]. ... When did nature begin? When you [forgot your true nature and] became [bound by time, space, and causation].

Swami Vivekananda

(The Complete Works of Swami Vivekananda/Volume 2/Practical Vedanta and other lectures/The Goal)