If the foundation is firm the building can withstand calamities. The practice of yoga is the foundation so that the self is not shaken under any circumstances.
B.K.S. IyengarOur flawed mechanisms of perception and thought are not a cause for grief, but an opportunity to evolve, for an internal evolution of consciousness that will also make possible, in a sustainable form, our aspirations toward what we call individual success and global progress.
B.K.S. Iyengar