O thou young in age and great in mind!

There is many a young child who is mature and grown up, and many an aged one who is ignorant and stupid. Growth and maturity are in intellect and understanding and not in age and duration of life.

'Abdu'l-Baha, Tablets of 'Abdu'l-Baha v1, p. 181

Physical fasting is a symbol of the spiritual fasting...

...Physical fasting is a symbol of the spiritual fasting, that is, abstaining from all carnal desires, becoming characterized with the attributes of the spiritual ones, attracted to the heavenly fragrances and enkindled with the fire of the love of God.

'Abdu'l-Baha, Tablets of 'Abdu'l-Baha v1, p. 40

Two kinds of happiness and what we should endeavor for.

Happiness consists of two kinds; physical and spiritual. The physical happiness is limited; its utmost duration is one day, one month, one year. It hath no result. Spiritual happiness is eternal and unfathomable. This kind of happiness appeareth in one’s soul with the love of God and suffereth one to attain to the virtues and perfections of the world of humanity. Therefore, endeavor as much as thou art able in order to illuminate the lamp of thy heart by the light of love.

'Abdu'l-Baha, Tablets of 'Abdu'l-Baha v3, p. 673

Love is...

Love is the mystery of divine revelations!
Love is the effulgent manifestation!
Love is the spiritual fulfillment!
Love is the light of the Kingdom!
Love is the breath of the Holy Spirit inspired into the human spirit!
Love is the cause of the manifestation of the Truth (God) in the phenomenal world!
Love is the necessary tie proceeding from the realities of things through divine creation!
Love is the means of the most great happiness in both the material and spiritual worlds!
Love is a light of guidance in the dark night!
Love is a bond between the Creator and the creature in the inner world!
Love is the cause of development to every enlightened man!
Love is the greatest law in this vast universe of God!
Love is the one law which causeth and controlleth order among the existing atoms!
Love is the universal magnetic power between the planets and stars shining in the lofty firmament!
Love is the cause of unfoldment to a searching mind, of the secrets deposited in the universe by the Infinite!
Love is the spirit of life in the bountiful body of the world!
Love is the cause of the civilization of nations in this mortal world!
Love is the highest honor to every righteous nation!

'Abdu'l-Baha, Tablets of 'Abdu'l-Baha p. 525