Fear is hidden consent. When you are afraid of something, it means that you admit its possibility and thus strengthen its hand. It can be said that it is a subconscient consent. Fear can be overcome in many ways. The ways of courage, faith, knowledge are some of them.
The Mother – Words of the Mother – II: CWM, Vol. 14, pp. 243 – 44
Why does one feel afraid?
There are three reasons. First, an excessive concern about one’s security. Next, what one does not know always gives an uneasy feeling which is translated in the consciousness by fear. And above all, one doesn’t have the habit of a spontaneous trust in the Divine. … If one always had the feeling that it is the best that happens in all circumstances, one would not be afraid.
The Mother – Questions and Answers: CWM, Vol. 4, p. 211
The Grace works for the realisation of your aspiration and everything is arranged to gain the most prompt, the quickest realisation—so there is nothing to fear.
Fear comes from insincerity. If you want a comfortable life, agreeable circumstances, etc., and you put conditions and restrictions, then you can fear.
But it has no business in the sadhana!
The Mother – Agenda: Vol. 8, p. 151
Fear is always a very bad adviser.
The Mother – Words of the Mother – II: CWM, Vol. 14, p. 240
Forward, ever forward, without fear and without hesitation.
The Mother – On Education: CWM,Vol. 12, p. 271
Assuming a spiritual wide control,
Making life’s sea a mirror of heaven’s sky,
The young divinity in her earthly limbs
Filled with celestial strength her mortal part.
Over was the haunted pain, the rending fear:
Her grief had passed away, her mind was still,
Her heart beat quietly with a sovereign force.
Sri Aurobindo – Savitri: CWSA, Vol. 34 , Book Nine, p. 573