The present invention relates to a glass including, in terms of mole percentage based on oxides: 52% to 70% of SiO2; 14% to 25% of Al2O3; 10% to 18% of Li2O; 1% to 7% of Na2O; 0.1% to 5% of K2O; 0% to 10% of B2O3; 0% to 5% of P2O5; 0% to 5% of MgO; 0% to 5% of ZnO; 0% to 2% of ZrO2; and 0% to 5% of Y2O3, in which a parameter M is 20 or less, the parameter M being determined by the following formula, M=−1.15×[SiO2]−1.73×[Al2O3]+0.155×[Li2O]+0.74×[Na2O]−4.75×[K2O]−2.1×[B2O3]−2.17×[P2O5]+3.25×[MgO]−2.0×[ZnO]−13.3×[ZrO2]−0.80×[Y2O3]+120.