''It is a mistake to think that any path of Yoga is facile, that any is a royal road or short cut to the Divine, or that like a system of "French made easy" or "French without tears", so there can be a system of "Yoga made easy" or "Yoga without tears". A few great souls prepared by past lives or otherwise lifted beyond the ordinary spiritual capacity may attain realisation more swiftly; some may have uplifting experiences at an early stage, but for most the siddhi of the path, whatever it is, must be the end of a long, difficult and persevering endeavour. One cannot have the crown of spiritual victory without the struggle or reach the heights without the ascent and its labour. Of all it can be said, "Difficult is that road, hard to tread like the edge of a razor."''
Sri Aurobindo - Letters on Yoga IV