Human spirit finds “eternal life” in the breath of the Holy Spirit

This spirit is one of the divine bounties, a manifestation of the Sun of Truth; but if the human spirit receives the breath of the Holy Spirit, then it is a pure spirit. The breath of the Holy Spirit is the divine teaching; in it the spirit finds eternal life. It is the heavenly light and illumines the human world by the divine qualities. Hence we must endeavour to act according to the teachings of Bahá'u'lláh. 

- ‘Abdu’l-Baha  (From a talk at Alliance Spiritualiste of Paris, 9 November 1911; Star of the West, vol. 2, no. 17, January 19, 1912)

“A person's heart must be like a child's, pure and free from all contamination.”

The hearts of children are extremely pure and simple. A person's heart must be like a child's, pure and free from all contamination. 

- 'Abdu'l-Baha  (Words of ‘Abdu’l-Baha, From a talk at San Francisco’s Jewish Temple, October 15, 1912, Pleasanton, California, USA, recorded by Mahmud Zarqani; ‘Mahmud’s Diary’)