Sri Ramakrishna's initial ecstasies were spontaneous as a child. Rick says, it seems that genuine saints sometimes perform Siddhis, but they discrete about it. Not showing them, showing off or using them to attract crowds.
Swami Sarvapriyananda teaches the Chapter 6 (Verse 1) of the Bhagavad Gita. In this series of talks, Swami Sarvapriyananda unfolds the highest truths of Vedanta through the study of the Bhagavad Gita (The Song of God).